我正在尝试在远程服务器上上传图像。如果我从谷歌下载手机上的图像并上传它们,例如http://www.mangauk.com/gallery/albums/album-11/lg/scooby.jpeg http://www.mangauk.com/gallery/albums/album-11/lg/scooby.jpeg它上传得很好。但是,如果我尝试上传用相机拍摄的图像,则不起作用。服务器只是挂起。
(IBAction)uploadImage {
/*
turning the image into a NSData object
getting the image back out of the UIImageView
setting the quality to 90
*/
NSData *imageData = UIImageJPEGRepresentation(image.image, 90);
// setting up the URL to post to
NSString *urlString = @"http://iphone.zcentric.com/test-upload.php";
// setting up the request object now
NSMutableURLRequest *request = [[[NSMutableURLRequest alloc] init] autorelease];
[request setURL:[NSURL URLWithString:urlString]];
[request setHTTPMethod:@"POST"];
/*
add some header info now
we always need a boundary when we post a file
also we need to set the content type
You might want to generate a random boundary.. this is just the same
as my output from wireshark on a valid html post
*/
NSString *boundary = [NSString stringWithString:@"---------------------------14737809831466499882746641449"];
NSString *contentType = [NSString stringWithFormat:@"multipart/form-data; boundary=%@",boundary];
[request addValue:contentType forHTTPHeaderField: @"Content-Type"];
/*
now lets create the body of the post
*/
NSMutableData *body = [NSMutableData data];
[body appendData:[[NSString stringWithFormat:@"rn--%@rn",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithString:@"Content-Disposition: form-data; name="userfile"; filename="ipodfile.jpg"rn"] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[[NSString stringWithString:@"Content-Type: application/octet-streamrnrn"] dataUsingEncoding:NSUTF8StringEncoding]];
[body appendData:[NSData dataWithData:imageData]];
[body appendData:[[NSString stringWithFormat:@"rn--%@--rn",boundary] dataUsingEncoding:NSUTF8StringEncoding]];
// setting the body of the post to the reqeust
[request setHTTPBody:body];
// now lets make the connection to the web
NSData *returnData = [NSURLConnection sendSynchronousRequest:request returningResponse:nil error:nil];
NSString *returnString = [[NSString alloc] initWithData:returnData encoding:NSUTF8StringEncoding];
NSLog(returnString);
}
和 php 脚本
$uploaddir = './uploads/';
$file = basename($_FILES['userfile']['name']);
$uploadfile = $uploaddir . $file;
if (move_uploaded_file($_FILES['userfile']['tmp_name'], $uploadfile)) {
echo "http://iphone.zcentric.com/uploads/{$file}";
}
问题一定出在您的 php 脚本中,因为文件必须发送给它。
您应该在 php 中定义文件名,而不是信任原始文件名。
否则,有人可能会上传恶意 .php 文件,而您的脚本会很乐意上传该文件并将其命名为 .php,然后他们就可以接管您的服务器。
你应该做这样的事情:
$uploaddir = './uploads/';
$file = $uploaddir . 'filename_chosen_by_you.jpg';
这也可能会解决 jpg / jpeg 问题,因为您正在进行命名。
另一件事 - 您也在执行同步请求 - 这意味着您的应用程序将在执行请求时等待并冻结(如果它是一个大文件,可能需要几秒钟),看看执行异步请求。这意味着它将在后台上传图像,然后在完成后调用一个函数,这样您就可以告诉用户一切都已上传完毕。
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